Related by context. Frequent words. (Click for all words.) 71 photometric 68 interferometry 63 NICMOS 62 spectra 61 interferometer 61 infrared wavelengths 61 shorter wavelengths 61 auroral 61 z = 60 spectroscopic 60 redshift 60 ionospheric 60 radiometer 60 occultation 59 microlensing 59 anisotropy 59 Hubble observations 59 astronomical observations 59 COROT 59 spectral 58 Type Ia supernovae 58 infrared spectroscopy 58 frequency comb 58 XMM Newton 58 FRET 58 isotropic 58 VLBA 58 solar corona 58 reflectance 57 luminosity 57 X ray emission 57 visible wavelengths 57 confocal 57 parallax 57 gravitational lensing 57 Gaussian 57 diffraction 56 irradiance 56 wavefront 56 ESO Very Large Telescope 56 optical microscopy 56 WMAP 56 wavelength 56 brightness 56 femtosecond 56 infrared 56 adaptive optics 55 GRB # 55 spectroscopy 55 laser pulses 55 gravitational wave 55 magnifications 55 infrared IR 54 astronomical objects 54 supernova remnant 54 planetary nebulae 54 magnetization 54 wavelengths 54 galaxy cluster 54 photodetector 54 InGaAs 54 OGLE 54 planets circling 54 GeV 54 extrasolar planets 54 GRBs 54 muon 54 WM Keck Observatory 54 illumination 53 synchrotron radiation 53 planet orbits 53 X ray beam 53 HD #b [002] 53 Voyager spacecraft 53 Spectrometer 53 luminance 53 #.#nm [001] 53 elliptical galaxies 53 CCD camera 53 absorbance 53 amplitudes 53 infrared radiation 53 optical microscope 53 ionization 53 microwave frequencies 53 hyperspectral 53 planets orbiting 53 THEMIS 53 exoplanet 53 supernovae 53 multispectral 53 diffractive 53 distant galaxies 53 photodetectors 52 dynamical 52 SQUID 52 extrasolar planet 52 voxel 52 Crab Nebula 52 cosmic microwave background 52 spatial resolution